9)Kelilingnya,yaitu…cm
a. 22
b. 22√2
c. 44
d. 44√2
pke cara
Bantu 2 soal aja
Jawaban:
8. b. 7√2
9. d. 44√2
Penjelasan dengan langkah-langkah:
8. d = √s² + s²
= √2s²
= √2(14 cm)²
= √2(196 cm²)
= √392 cm²
= √196 cm² × 2
= 14√2 cm
r = d : 2
= 14√2 cm : 2
= 7√2 cm
9. K = 2πr
= 2 × 22/7 × 7√2 cm
= 44 × 1√2 cm
= 44 × √2 cm
= 44√2 cm
Jawaban:
Geometri =
Panjang sisi = 14 cm
Jari Jari = 1/2 (diagonal panjang sisi), demikian :
r = 1/2(s√2)
r = 1/2(14√2)
r = 7√2 cm (B.)
9.
Keliling Lingkaran = πd
K = 22/7 . 14√2
K = 22 . 2√2